I won a lemon law action against Lincoln. At first they attack you to see how serious you are. Then they "low-ball" you with a crappy settlement, then their attorney sends you a treatening letter and just before it goes to court, they settle. If you're patient and have a good case, you'll win in the end.
I'm sorry to hear that DMC has dropped out of the arbitration program. It'll make it tough to get an easy settlement. I agree that an attorney will help your cause. It lets them know how strong you feel about the case.